Thank you! Mouse sensitivity is definitely an issue. There is a slider in the menu, but when I put out the next build I will be lowering the default sensitivity by half, in my testing it makes the game much easier.
As for the steering and leaning; it takes some getting used to but that is actually how bikes work in real life. We get so used to it that we don't notice, but to turn you must initially steer in the opposite direction just for a moment.
For pedaling I have been thinking of adding a color indicator to better show which pedal is forward.
Thank you for the feedback!